Mutations in the regulatory domain of cystathionine beta-synthase can functionally suppress patient-derived mutations in cis

Abstract excerpt

Human cystathionine beta--synthase (CBS) is an S-adenosylmethionine-regulated enzyme that plays a key role in the metabolism of homocysteine. Mutations in CBS are known to cause homocystinuria, an inborn error in metabolism. We previously developed a yeast functional assay for CBS and used it to characterize mutations found in homocystinuric patients. We discovered that many patient-derived mutations are...

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